upstream comment:
The inline-asm is totally incorrect here is the corrected version of the
function (note res should be set):
static bool atomic_test_and_reset_bit(unsigned long *v,unsigned long bit) {
bool res = 0;
__asm__ __volatile__( "btr %2,%1\n"
"adc $0,%0\n"
:"+r"(res): "m"(*v)
,"r"(bit), "r"(0): "flags") ;
return res ? 1 : 0;
}
** Changed in: gcc-4.4 (Ubuntu)
Status: Confirmed => Invalid
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[PR42553] Compiled program misbehaves
https://bugs.launchpad.net/bugs/434527
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